fmt up to 8.0.1 umul192_upper64 stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in fmt up to 8.0.1. Affected is the function fmt::v8::detail::dragonbox::umul192_upper64. Such manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2021-45959. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in fmt up to 8.0.1 and classified as critical. Affected by this issue is the function fmt::v8::detail::dragonbox::umul192_upper64. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was presented 01/01/2022. The advisory is available at bugs.chromium.org. This vulnerability is handled as CVE-2021-45959 since 12/31/2021. Technical details are known, but there is no available exploit.

Applying the patch 2038bf61831eb8faede0883965364a974d1350fe is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 2038bf61831eb8faede0883965364a974d1350fe

Timelineinfo

12/31/2021 🔍
01/01/2022 +1 days 🔍
01/01/2022 +0 days 🔍
01/05/2022 +4 days 🔍

Sourcesinfo

Advisory: 2038bf61831eb8faede0883965364a974d1350fe
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-45959 (🔍)
GCVE (CVE): GCVE-0-2021-45959
GCVE (VulDB): GCVE-100-189518

Entryinfo

Created: 01/01/2022 10:18
Updated: 01/05/2022 12:36
Changes: 01/01/2022 10:18 (40), 01/05/2022 12:30 (1), 01/05/2022 12:36 (1)
Complete: 🔍
Cache ID: 216::103

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